Improvement in bellows-pumps



UNITED STATES PATENT. OFFICE.

EZRA PARKER, OF BEVERLY, OHIO.

IMPROVEMENT iN BELLoWs-PUMPS.

Specification forming part of Letters Patent No. 44,6119, dated October1l, 1864.

To all whom it may concern:

Be it. known that I, EZRA PARKER, of Beverly, in the county ofWashington and State of Ohio, have invented a new and useful Pump; and Ido hereby declare that the following is a full and clear description ofthe same, reference being had to the annexed drawings and the lettersmarked thereon.

Figure l is a perspective view of my pump. Fig. 2 is a vertical sectionthrough the center of the pump, showing the valves, Src.

The construction of my pump is so simple tnat a few words will explainit. It is made vot' two round pieces of leather or gum cloth, of

any diameter desired, fastened together at the .edges by screws orrivets through two flat rings of metal. Fastened to these leather disks,in a circle round the center, are metal plates. These plates are on theoutside, and nearly lill the inner circle of the aforesaid flat rings.Near the center, where the said plates are fastened to the leather orgum cloth, are other thin small plates, through which and the leathersmall bolts or rivets pass to hold the leather firmly to said largeplates, and these small` plates also form valve-seats for valves made inthe usual form and fastened to said plates. To the upper large plate anair-chamber is fastened, and to the lower large plate a supplypipe ofany desired length is attached. rlhis large plate is fastened to thefloor or a platform. The upper one is loose and free, and has aleverattached to it. This lever is forked, au arm passing each side of theair-chamber with a pivot-screw in arm and into little holes in theair-chamber, for the purpose of allowing the lever to move freely up anddown. The ends ofthe arms pass back to a post or fulcrum to which theyare hin ged, The other end of said lever has a handle turned on it. Theaforesaid airchamber has an exhaust-pipe, which can be turned todischarge on either side.

A in Fig. lis the large upper plate. A A in Fig. 2 are the upper andlower large metal plates. holding the leather or gumvcloth together. Uis the air-chamber attached to the upper plate A. C2 is the leather 0rgum disks. D is the discharge-pipe in air chamber. E is the leverattached to the said air-chamber for raising and pressing said largeplate A. j' f are the small plates or valve-seats (shown in Fig. 2) towhich the exhaust and supply valves h la are hinged. G is a pipe forentering cistern or wells.

The operation of my pump is as follows: The lever raised up, the platesof leather or gum are drawn apart, leaving a vacuum between; the Waterrushes in and fills it. The lever then pressed down, the water is forcedup through the upper valve into the air-cha1nber, and out through thedischarge-pipe, the lower valve being shut the while. As the lever israised, the upper valve shuts and the lower opens, allowing the wateragain to fill vacuum as before, thus making one of the most simple andeffective pumps, having no friction and,of course, not any wear ofplnngers, as in ordinary pumps. It also requires but a very short andlittle movement of the lever.

' After having thus fully described my pump, what I claim as new, anddesire to secure by Letters Patent, is

The combination and arrangement of the upper and lower plates, A, flatrings B, airchamber C, leatheror gum disks O2, dischargepipe D, lever E,small plates or valveseats f, supply and exhaust valves h', the wholearranged substantially as specified, for the pur pose set forth.

EZRA PARKER.

Witnesses:

R. R. PRENricE, J. J. BARR.

B B are the outer or flat rings for.

